National avalanche accident statistics are collected and archived by the Colorado Avalanche Information Center (CAIC). Supporting avalanche statistics are collected and submitted to CAIC by the local avalanche centers from around the country and by www.avalanche.org.
Special thanks to Mark Moore, retired NWAC forecast director, for his determination and persistence in maintaining the local NW avalanche database over many decades. The charts below are updated periodically, usually in the late Spring and once again in the Fall. Click on the individual graphs to open in a new window as a PDF. Email firstname.lastname@example.org for questions about these graphs.